I think Naruto's ranking drop will just be a 1 week thing.
Unlike Bleach which was having serious decline in sales, the past 2 volumes of Naruto have been the best and fastest selling in the entire series.
│*618737 (3)│*855758│*918583│*952072│*976138┃1,152,871 (241)┃2010/05|NARUTO 51
│*846206 (5)│1007569│1063820│1094042│1113307┃1,209,750 (145)┃2010/08|NARUTO 52
│*819243 (4)│*973473│1030345│1067013│----------┃1,122,247 (*53)┃2010/11|NARUTO 53
│*694023 (5)│*910636│*981289│1026437│1051326┃1,229,170 (327)┃2011/01|NARUTO 54
│*650587 (4)│*848603│*943717│*976846│*997927┃1,131,672 (214)┃2011/04|NARUTO 55
│*538406 (3)│*756666│*837416│*880292│*909219┃1,060,121 (171)┃2011/06|NARUTO 56
│*716937 (4)│*894492│*961120│*993475│1013587┃1,090,567 (109)┃2011/08|NARUTO 57
│*704610 (3)│*877012│*933239│*966213│----------┃*,966,213 (*24)┃2011/11|NARUTO 58
│*668680 (3)│*881727│*946792│*989790│1013990┃1,013,990 (*31)┃2012/02|NARUTO 59
│*847826 (5)│*992990│1045584│1079979│1102222┃1,117,766 (*40)┃2012/05|NARUTO 60
│*706697 (3)│1016150│1115161│1164161│----------┃1,164,161 (*24)┃2012/07|NARUTO 61